Palladium-Catalyzed Formal [4 + 1] Annulation via Metal Carbene Migratory Insertion and C(sp<sup>2</sup>)–H Bond Functionalization
作者:Shuai Xu、Ri Chen、Zihao Fu、Qi Zhou、Yan Zhang、Jianbo Wang
DOI:10.1021/acscatal.6b03562
日期:2017.3.3
A highly efficient and operationally simple palladium-catalyzed formal [4 + 1] annulationreaction has been developed. The reaction is featured by the formation of two different C–C bonds on a carbenic center. It represents a concise method for the synthesis of a wide range of polycyclic aromatic hydrocarbons (PAHs) and 1H-indenes with easily available (trimethylsilyl)diazomethane as the carbene source
Substituted terphenyl compounds for the treatment of inflammation
申请人:G.D. Searle & Co.
公开号:US05739166A1
公开(公告)日:1998-04-14
A class of terphenyl compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula II: ##STR1## wherein each of R.sup.2 and R.sup.3 is independently selected from hydrido and halo; or wherein R.sup.2 and R.sup.3 together form --OCH.sub.2 O--; wherein each of R.sup.6 through R.sup.8 is independently selected from hydrido, lower alkyl, halo, lower alkoxy, lower haloalkyl, and lower dialkylamino; or wherein R.sup.6 and R.sup.7 together form --OCH.sub.2 O; and wherein R.sup.12 is selected from lower alkylsulfonyl and aminosulfonyl; or a pharmaceutically-acceptable salt thereof.
This invention relates to ortho substituted phenyl compounds as inhibitors of prostaglandin synthase, to pharmaceutical compositions comprising such compounds and to methods of using such compounds as antiinflammatory and antipyretic agents. The class of compounds useful in this method of treatment is represented by Formula I below: ##STR1##
Transition metal-catalyzed diamination by hydroxylamines is a common approach for making three-membered aziridines, while its use for building the larger N-heterocycles is still underdeveloped. Herein, we report an efficient Pd(0)-catalyzed inter-molecular [4+1] annulation of o-bromo(or chloro)-biaryls with bifunctional secondary hydroxylamines for the one-step assembly of synthetically useful carbazoles
羟胺的过渡金属催化二化是制备三元氮丙啶的常用方法,而其用于构建较大的N-杂环的用途仍未开发。在此,我们报告了一种有效的 Pd(0) 催化的分子间 [4+1] 环化邻溴(或氯)-联芳基与双功能仲羟胺,用于一步组装合成有用的咔唑。值得注意的是,这种多米诺骨牌反应的关键是明智地选择氨基源和 Pd(0)-催化剂,以便在具有不稳定 NO 的羟胺存在下将芳基卤化物氧化加成到 Pd(0)-物种中。键。
Substituted biphenyl compounds for the treatment of inflammation
申请人:G.D. Searle & Co.
公开号:US20020169206A1
公开(公告)日:2002-11-14
A class of substituted biphenyl compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula III:
1
wherein each of R
11
through R
13
is independently selected from hydrido, halo, lower alkoxy, lower haloalkyl, amino, lower alkylamino, lower dialkylamino, and lower haloalkoxy; or wherein R
11
and R
12
together form —O(CH
2
)
n
O—; wherein n is 1-2, inclusive; or a pharmaceutically-acceptable salt thereof.